Retroviruses differ from other RNA viruses by:
a. having reverse transcriptase instead of RNA-dependent RNA polymerase.
b. the shape of their capsid.
c. the way they infect their host cells.
d. the sugar coating on their capsids.
e. lytically destroying their hosts
A
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Many organisms grow in areas where sun and nutrition sources are poor, such as the hydrothermal vents at the bottom of the ocean. By what process do these organisms make their own food?
a. photoautotrophy b. diffusion c. chemoautotrophy d. predation
The spongy body running the length of the underside of the penis is the _____.
A. coronal ridge B. corpora cavernosa C. corpus spongiosum D. coronal sponge
If two genes on the same chromosome are located 10 map units from each other, what percentage of the offspring should have a recombinant phenotype?
a. about 10% b. about 25% c. about 50% d. about 75%
Organisms that make their own organic compounds from inorganic substances are called
A. animals. B. animorphs. C. heterotrophs. D. autotrophs.